Spray gun



- Feb. 17, 1931. w ADAMS 1,793,383

SPRAY GUN Filed Oct. :51. 1928 2 Sheets-Sheet 1 iii/9r A. W. ADAMS Feb. 17,1931.

2 Sheets-Sheet 2 I A! VEN To) Patented Feb. 17, 1931 ALEXANDER Wnnmus; onmnivn PARK, onrnnro, GANADA, essrelvon To averse ooraraus, or rononro, on'rnnro, CANADA I SPRAY GUN Application filea'oetober'ai, 192s. Serial no. 316,145.

The invention relates to improvements in spray guns as described in the present spec fication and shown in the accompanying drawings that form a part of the same. 5 r The main object of tl e invcntion is to provide a spray gun to which the tire chuck of the air compressor, line may be readily adaptedin such a manner that the operation of the valve in said chuck is controlled through the movement of the trigger of the gun. i

A further object of the invention is to provide a'simple and efficient spray gun inthe Construction of which no valves, packing ele ments or otherjdevices likely vto become clogged or-damaged through the action of the substance being sprayed are employed, thus rendering the gunequally elficient in the spraying of any liquids, such as oil, paint, grease or water, or powder,

And generally the objects of the inventlon are to provide a serviceable spray gun of sturdy construction, which may be easily connected and disconnected to an air line and which may be producedat small cost.

The invention consists in the novel features of construction, arrangements and combinations described in the present specification and more particularly pointed out in the claims for, novelty following. V

In the drawings, Figure 1 is a side elevation, partly in vertical section, of my improved spraygun, the liquid container being broken away. a.

1 Figure 2 is a plan viewof the gun shown being shown. p I 7 Figure 3 is a cross sectional view taken on the line 3-3 of Figure 2.

Figure 4 is a side elevation, partly in vertical section, of a modified form of gun, the liquid container being omitted.

in Figure 1, the container and air chuck not 1 Figure 5 is a side elevation of a further modification of the invention, a portion of the gun being broken away and sectionedto chuck clamp and trigger. V r

Flgure 6 1s a detail of the chuck clamp'and show the method of mounting the co'mbine'd ,trig'ger shown in Figure 5.

Figure is aside elevation of still another.

modification, portions of which. are broken away. j ,7

Figure 8 is a detail ofthe shown'in Figure 7. v I Figure 9 is a plan view of a structure shown in Figure 7 Figures 10 and 11 represent vertical and horizontal sectional views of the chuck.

' Like numeral of reference indicate cortrigger element portionof the I responding partsin the various figures.

Referring to the drawings, the body, indicated by the. numeral 1, of the gun is pro vided witha longitudinal bore 2 extending completely through the same and being threaded interiorly at each end, and with a transverse bore 3 preferably entering the under side of the body substantially midway of thelength thereof and registering at its inner end with the longitudinal bore, said body also being providedwith a rearwardly positioned downwardly inclined integral handled having its rear face grooved longitudinally, as at 5, for the reception of the pipe 6 of the air compressor line, said body being terminated short of the rear face of thehandle 4, as at 7, to permit of the movement of the chuck 8 toas a.

wards the bore 2, as will be explained in de I tail hereinafter.

The lower side of thebody is preferably extended downwardly inthe formiof a nipple 9,through which the bore 8 extends, and into which is screwed a pipe 10 carrying at its lower end the container 11 adapted to con-, tain the liquid, orpowder, to be sprayed, said pipe 10 being provided with a valve 12 to regulate the discharge ofithe contentsofthe container.

The barrel ,13 which is secured in the forward end of the stock, or body, of the gun is preferably threaded at its outer'end for the reception of a suitable nozzlel.

, Threading into the rear end of the bore 2 and projecting rearwardly therefrom the required distance to enterthe opening in the chuck 8 around the valve thereof when the air pipe 6 is placed in position in the handle e, is a nipple 15, which nipple is threaded internally at its forward end for the reception ofan airnoz'zle16 which preferably extends v forwardly slightly past the vertical bore 3,

' so that in the operation of the gun no air will ple and is drawniorwardly thereon to open the valve in said chuck by meansoi a stirrup l7 pivoted at its ends'to the top ends.

of a trigger element 18 which is pivoted intermediate of its length to thebody 1.

The trigger element may be fork shaped, with the forked portion spanning the body 1 and the ends of the stirrup pivoted to the corresponding side ends of the stirrup, as shown in'Figures 1 and 2, or, a trigger element as shown-in Figures 7 to 9 and indi cated by the numeral 19 maybe employed,v .which latter trigger operates in a. slot 20 in the gun and is provided with an integral hollow head 21 adapted to loosely encircle the nipple 15, and to opposite sides of which the ends of the clamp, or stirrup, are pivoted.

In Figure 4 a modified form of construction is shown in which pressure is applied to force the chuck on to the nipple 1 5 by means ofa lever 23, pivoted to the top side of the body of the gun and extending rearwardly and downwardly parallel with the handle 4 and being provided with an inward projection 24 adapted to bear against the rear side of the chuck as pressure is applied to the handle portion of the lever, it simply being necessary in the operation oi": this type of gun for the operator to close his-hand. over the handle 4 and the lever 23 between which the pipe 6 is positioned. Z

In Figures 5 and 6 the triggerelement 25 extends through the gun and operates in a slot26 therein and is provided with a fork shaped upper end 27 adapted to span the chuck Sand in operation bearing against the flange 28 of the chuck to force said chuck on to the nipple 15 to open the valve in the chuck.

In the use of this. invention a nozzle 16 of the dimensions necessary to give the desired spray is threaded into the nipple '15 and said nipple is threaded into the bore 2 the required distance. The air pipe6 is then laid inthe concaved portion 5 of the handle 4 with the chuck 8 in line with the nipple 15 and the chuckis then clamped to the gun by simply pulling down the pivoted stirrup'17, or 23, ac-

cording to the type of stirrup employed. The operator then closes his hand over the air pipe and the handle .4 and by the manipulation ofthetrigger elementcan readily draw the chuck on to the nipple to'cause said nipple contents of the container through the dis charge nozzle 14. On release of the pull on the trigger element the pressure of the air in the pipe 6 will force the valve to itsclosed' position, causing the coincident withdrawal of the chuck a corresponding distance.

The chuck illustrated in connection with the various forms of the invention is of a conventional type wherein the valve indicated at 30 cooperates with a sealing gasket 31 under pressure in the pipe lineto prevent outlet of the air, the valve having a pear-shaped projection 32 designedto be engaged by the nipple under pressure on the chuck to unseat the valve, as indicated in Figure 10.

The present invention provides a simple and efficient spray gun or such sturdy construction as to withstand the hard usage to which such devices aresubjected. The method of mounting thestirrup and trigger insures the chuck being drawn straight on to the nipple and insures positive action of the gun.

lVhat I claim is r 1 1. In a spray gun adapted for cooperation with the tire chuck of an air compressor tube,

the combination of a body having a longitubeing grooved longitudinally for the reception of said air tube, an air nipple secured over sald longltudinal bore and extending rearwardly from said body and adaptedto enter said chuck, a. trigger, and means operable through the movement of said trigger to draw said chuck on to said nipple to open the valve in said chuck. V

2. In a spray gun adapted for cooperation with the tire chuck of an-air compressor tube, A i

the combination of a body having a long tudinal bore and an intermediate cross bore extending upwardly through the under side ofsaid body into communication with said lon itudinal bore,a container for the subcarrying a nozzle extending forwardly pas t said cross bore, a trigger, anda stirrup piv-. otally supported by said tI'l QI and adapted hip 'to be drawn over the rear side of said chuck whereby on the operation of said trigger said chuck is drawn forwardlyon to said nipple to open the valve in said chuck.

. stance to be sprayed supported by said body in c provided with a nozzle and also having an intermediate cross bore through the lower wall thereof terminating in register wlth said longitudinal bore, an air nozzle ZIClJLlStELblB 1n the forward end of said nipple, a container for said nipple.

the substance to be sprayed, said container being supported by said body in register with said cross bore, a valve controlling the discharge from said container, a handle integral with said body and'depending from the rear end thereof, and a trigger element having means for drawing said chuck forwardly on 4. A spray gun comprising a body having an opening in the lower side thereof to admit the substance to be sprayed, a container removably secured to said body in register with said opening, said body also having a longitudinal bore in register witn saidopening,

said longitudinal bore at one end receiving 111' under pressure to spray the contents or said container through the other end thereof,

a nipple adjustable in said longitudinal bore and projecting rearwardly ofsaid body, a nozzle adjustable in the forward end of said nipple, handle odsetrearwardly from said body and depending downwardly therefrom, the rear face of handle being grooved longi tudinally, an adjustable chuck clamp extending rearwardly of said nipple, and a trigger adapted to draw said clamp forwardly towards said nipple.

5. In a spray gun adapted for cooperation with the tire chuck of an air compressor tube, the combination of a body having a longitudinal bore and an intermediate cross bore extending upwardly through the under side of said body into communication with said longitudinal bore, a handle integral with said body and depending downwardly from the rear end thereof, the. rear face of said handle being grooved longitudinally for the reception of said air tube, nipple secured in said longitudinal bore and extending rearwardly from said body and adapted to enter said chuck, and pivoted manually operable means adapted to force said chuck forwardly on said nipple.

6. A spray gun adapted for cooperation with an air compressor tube having a tire chuck, including a body formed with an air bore and anintercepting material channel, an air tube reniovably secured in said bore and lined with relation to the body, means carried by the body for supporting the compressor tube in position to arrange the chuck in line with the air tube, and means including a trigger to move the chuck relative to the June, 1928.

air tube to cause the lattertoj open the valve 1n the Chuck in correspondence with the chuck movement.

7; A spray gun adapted for cooperation with anair compressor tube having a tirc chuck, including a body having longi- 1 t dinally ranging air bore and; an intercep material channel, an tube:- having threaded connection with theboc "ectin be ond the rear end thereof "'ahandle J .1 a

"ied b the bod r formed to su oort 1 J i l line with the air tube, a trigger mounted on the body, and means operated by the trigger for moving the chuck with relation to the fixed air tube to'thereby open the valve of the chuck proportionally to such chuck movement. I

'8. A spray gun adapted for cooperation with an airsupply'tube having a tire chuck, including a spray nozzle having an air,

channel and a communicating fluent-material channel, the lnlet'of said air channel being in the form of a pro ecting nipple, means secured to said nozzlefor supporting the-air supply tube with the chuck disposed in line with the nipple, and means including a trigger to move the chuck relative to the nipple to cause the latter to open the valve in the chuck in correspondencewith the chuckfmoveinent. v

9. A spray gun adapted for cooperation with an air supply tube having a tire chuck, including a spray nozzle having va longine compressor tube to arrange the chuck in and protudinally extending air passage and com- 190 municating fluent-material channel, said nozzle having a nipple projecting rearwardly and forming the airinlet to said passage, means secured to said nozzle and formed to support the air supply tube with the chuck m5 positioned in line with said ni'pple,- said means including a handle, and a trigger operable to move the chuck with relation to the nipple to thereby open the valve of the chuck proportionally to such chuck movement.

Signed at Toronto,.Ont., this 12th day of ALEXANDER W. ADAMS.

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